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MARIN will be present at the following exhibitions. We hope to meet up again soon!


Maritime ‘crash barriers’ to avert collisions with wind turbines


OTC May 2-5


Maritime Industry May 17-19


Posidonia June, 6-10


Last March MARIN tested three innovative barriers aimed at averting collisions between ships and wind turbines. The research was prompted by the incident involving the Julietta D on 31 January this year. This drifting bulk carrier initially collided with a tanker before hitting a transformer platform and a turbine foundation for the Hollandse Kust Zuid windfarm currently under construction. A collision with an installed wind turbine carries a real risk of the turbine toppling onto the vessel, seriously endangering crew, passengers, the ship itself and the environment.


ITS June, 21-23


Some 2500 wind turbines are set to be installed on the North Sea in the period to 2030, taking the risk of a turbine being hit by a ship to around 1.5 to 2.5 times a year, our research for the Dutch government shows. To give an idea: vessels going adrift on the North Sea number around eighty each year.


Electric & Hybrid Marine World Expo


June, 21-23


A group of 20 experts from MARIN and the wider maritime sector developed a trio of innovative concepts for maritime crash barriers between shipping routes and windfarms during a workshop last February. The first concept involves a string of surface buoys secured by drag anchors. The second concept comprises a smart suspension net between


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fixed poles and the third is an anchored underwater hook line designed to catch the anchor of the drifting vessel. MARIN built scale models of all three solutions and ran tests in its Offshore Basin to see if the barriers were capable of deflecting a scale model comparable to the Julietta D in storm conditions.


Preliminary results are encouraging. The various concepts and all test results are being shared as an open innovation project to enable further development of the most promising concepts. The initiative has also sparked widespread international interest.


Representatives of the following Dutch maritime and offshore organizations were involved in this project: Bluewater Energy Services, Mooreast, Vuyk Engineering, Heerema Marine Contractors, Boskalis, GustoMSC, KRVE (Rotterdam Boatmen), Pinkster Marine Hydro- dynamics, Huisman Equipment, Orca Offshore en SBM Offshore.


For further information contact William Otto (project manager Offshore), w.otto@marin.nl or Yvonne Koldenhof, teamlead Traffic & Safety, y.koldenhof@marin.nl


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